It's plastic money you see. Without having to make your wallet look the ancient obese way with lots of cash (for the rich, of course:)), you have the convenience now to carry the same monetary value in your wallet with this card. And nowadays, credit card is almost indispensable with the rapidly evolving e-Commerce platforms. Soon, a day will come when you will get to see your hard earned money in cash, may be once in a decade :-)
But yes, I completely agree with the previous responses that it must be used with care and more importantly, with a calculative mindset.

you are pretty much right. you need not take your wallet every where. And i like your point of e-commerce. You can buy and pay bills so conveniently . But there are dangers of theft of your money also. You know the online spam and all that. But we will save a lot of trees by seeing cash in a decade though.....

PROS:
-Consumes less space in your wallet
-Instant cash anytime! :D
-You have grace period so you have time to accumulate money and pay for the balance.
CONS:
-Of course you cannot use them in establishments that don't accept credit cards. :D
-The finance charge/interest can be pretty overwhelming if you don't pay the balance full. Plus there are other charges like the "late payment charge".
-Can get you addicted to impulsive shopping; credit cards, as much as possible, should only be used for things that are very important only.
I don't have a credit card, and no one in the family has; we just discussed about this in my Math subject.

b ut my point is all the points can be done with a debit card too.
(surely you have to have enough bank balance though)
but this can keep the cons at bays ...so why not a debit card instead of a credit card?

Hiya sunu,
Credit Cards can be a Godsend in some cases where you need to pay something that you would normally pay in cash and find that you can´t. I would only every use a Credit Card for that one time.
Even then I would make sure I have enough money beforehand to be able to put back into the Bank on time instead of letting them charge me extra interest. I would make sure I have at least three quarters of what I have got to pay ready and make sure that I can get the other quarter into the Bank pretty quick.
Otherwise Credit Cards for me are a no no.